C / C++ / MFC

DWORD pid = GetCurrentProcessId();
	HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, pid);
	HANDLE hToken;
	BOOL b = OpenProcessToken( hProcess,TOKEN_ALL_ACCESS, &hToken );		
	DWORD siz;
	b = GetTokenInformation(hToken, TokenOwner , NULL,
		NULL , &siz);
	PTOKEN_OWNER tokown = (PTOKEN_OWNER) GlobalAlloc(GPTR,siz);
	b = GetTokenInformation(hToken, TokenOwner , &tokown,
		siz , &siz);
	
	char accname[30];
	char DomainName [256];
	DWORD cbName = 30;
	DWORD cbDomainName = 256;
	SID_NAME_USE nUse;

	b = LookupAccountSid("\\\\Trivandrum",tokown,accname,&cbName,
		DomainName, &cbDomainName,&nUse);
	if(b)
		MessageBox(0,"suc","",0);
	else
	{
		char buf[512];
		sprintf(buf,"%d",GetLastError());
		MessageBox(0,buf,"",0);
	}

	GlobalFree(tokown);